@function Px($px) {
    @return $px / 750 * 10rem;
  }
  
  @mixin Height($height) {
    height: $height;
    line-height: $height;
  }
  
  @mixin Gradient($color) {
    background: linear-gradient(top, $color, darken($color, 5%));
  }
  
  $white: #fff !default;
  $black: #333 !default; 
  $gray-dark: #666 !default;
  $gray: #999 !default;
  $white-light: #e5e5e5 !default;
  $white-gray: #f3f3f3 !default;
  
  $blue-dark: #374d63 !default;
  
  $red: #ef3d3f !default;
  $orange: #ffa438 !default;
  $green: #4cc1a7 !default;
  $yellow: #ffaf47 !default;
  $blue: #5e91fe !default;
  $blue-gray: #8a9ddd !default;
  $purple: #965cff !default;
  
  $font-size-normal:Px(36) !default;
  $font-size-24:Px(24) !default;
  $font-size-36:Px(36) !default;
  $font-size-48:Px(48) !default;
  $font-size-60:Px(60) !default;
  $font-size-72:Px(72) !default;